Version 3.0.0-417.4.beta

Change-Id: I615109db2a555b2501212177354f274ed4e1d7cc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/300560
Commit-Queue: Alexander Thomas <athom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>

Author: itsjustkevin

tools/VERSION

@@ -28,4 +28,4 @@ MAJOR 3
 MINOR 0
 PATCH 0
 PRERELEASE 417
-PRERELEASE_PATCH 3
+PRERELEASE_PATCH 4